论文标题
早期类型星系中球状簇系统的缩放关系。 ii。有环境依赖吗?
Scaling relations for globular cluster systems in early-type galaxies. II. Is there an environmental dependence?
论文作者
论文摘要
球状簇系统(GCSS)的当前特性是其宿主星系所经历的演变的结果,其构成了GCS及其空间分布的丰富性以及其他特征。我们对位于集群环境(处女座,福纳克斯和昏迷)中的近30个早期型星系(ETG)样本的球状簇的投影径向分布进行了分析。我们还包括在研究六个ETG中,为此,其GCS径向概况的参数公开可用。最终分析是通过添加以前论文(论文I)的ETG的GCSS来对扩大样品(〜100 GCS)进行的。对于整个样本,获得了涉及GCS不同参数的缩放关系,并补充了在论文I中获得的。几种关系指向二阶对环境密度的依赖性。最后,在文献环境中分析结果。
The current properties of globular cluster systems (GCSs) are the result of the evolution experienced by their host galaxies, which shape the richness of the GCS as well as its spatial distribution, among other features. We carry out an analysis of the projected radial distribution of globular clusters for a sample of almost 30 early-type galaxies (ETGs) of intermediate and low luminosity, located in cluster environments (Virgo, Fornax and Coma). We also include in the study six ETGs, for which the parameters of their GCS radial profiles are publicly available. The final analysis is performed on an enlarged sample (~ 100 GCSs), by adding the GCSs of ETGs from our previous paper (Paper I). Scaling relations involving different parameters of the GCSs are obtained for the whole sample and complement those obtained in Paper I. Several of such relations point to a second-order dependence on the environmental density. Finally, the results are analysed in the literature context.